<template>
  <div class="employees-container">
    <div class="app-container">
      <page-tools>
        <template #left>
          <span>总记录数: {{ total }} 条</span>
        </template>
        <template #right>
          <el-button
            v-allow
            type="warning"
            size="small"
            @click="$router.push('/import')"
          >excel导入</el-button>
          <el-button
            v-allow="'import_excel'"
            type="danger"
            size="small"
            @click="exportExcel"
          >excel导出</el-button>
          <el-button
            type="primary"
            size="small"
            @click="showDialog=true"
          >新增员工</el-button>
        </template>
      </page-tools>

      <el-card style="margin-top: 10px;">
        <el-table :data="list" border :default-sort="{prop: 'timeOfEntry', order: 'descending'}">
          <el-table-column label="序号" width="50" type="index" />
          <el-table-column label="姓名" prop="username" />
          <el-table-column label="员工头像" width="100">
            <template #default="{row}">
              <img
                v-imgerror="require('@/assets/common/head.jpg')"
                :src="row.staffPhoto"
                alt=""
                style="width: 100%"
                @click="showCode(row.staffPhoto)"
              >
            </template>
          </el-table-column>
          <el-table-column label="工号" prop="workNumber" />
          <el-table-column label="聘用形式" prop="formOfEmployment">
            <!-- 使用作用域插槽自定义内容展示数据 -->
            <template #default="{row}">
              {{ formatData(row.formOfEmployment) }}
            </template>
          </el-table-column>
          <el-table-column label="部门" prop="departmentName" />
          <el-table-column label="入职时间" prop="timeOfEntry" sortable />
          <!-- <el-table-column label="账户状态" /> -->
          <el-table-column label="操作" width="280">
            <template #default="{row}">
              <el-button type="text" size="small" @click="$router.push(`/employees/detail/${row.id}`)">查看</el-button>
              <el-button type="text" size="small" @click="hAssignRole(row.id)">分配角色</el-button>
              <el-button type="text" size="small" @click="hDel(row.id)">删除</el-button>
            </template>
          </el-table-column>
        </el-table>
        <!-- 分页组件 -->
        <el-row type="flex" justify="center" align="middle" style="height: 60px">
          <el-pagination
            layout="total, sizes,prev, pager, next, jumper"
            :total="total"
            :page-size="size"
            :page-sizes="[2,5,10]"
            @current-change="hCurrentChange"
            @size-change="hSizeChange"
          />
        </el-row>
      </el-card>

      <!-- 实现新增员工的弹层 -->
      <el-dialog v-if="showDialog" title="新增员工" :visible.sync="showDialog" width="40%">
        <addEmployees @close="showDialog=false" @success="hSuccess" />
      </el-dialog>

      <!-- 生成二维码的图片 -->
      <el-dialog title="生成二维码图片" :visible.sync="showCodeDialog">
        <el-row type="flex" justify="center">
          <!-- 画布是用来显示二维码图片 -->
          <canvas ref="myCanvas" />
        </el-row>
      </el-dialog>

      <!-- 分配权限弹层 -->
      <el-dialog title="分配权限" :visible.sync="showDialogRole">
        <AssignRole
          v-if="showDialogRole"
          :cur-id="curId"
          @success="showDialogRole=false"
        />
      </el-dialog>
    </div>
  </div>
</template>

<script>
import { delEmployees, getEmployees } from '@/api/employees'
import employeesEnum from '@/constant/employees'
// const hireType = {}
// employeesEnum.hireType.forEach(item => { hireType[item.id] = item.value })
const hireType = employeesEnum.hireType.reduce((acc, item) => {
  acc[item.id] = item.value
  return acc
}, {})
import addEmployees from './empDialog.vue'
import QRCode from 'qrcode'
import AssignRole from './assignRole'
export default {
  components: {
    addEmployees,
    AssignRole
  },
  data() {
    return {
      list: [],
      page: 1,
      size: 10,
      total: 0,
      showDialog: false, // 新增员工
      showCodeDialog: false, // 二维码
      showDialogRole: false, // 分配角色
      curId: null
    }
  },
  created() {
    this.loadEmployees()
  },
  methods: {
    // 数据渲染
    async loadEmployees() {
      try {
        const res = await getEmployees({ page: this.page, size: this.size })
        // console.log(res)
        if (res.code !== 10000) return this.$message.error(res.message)
        this.$message.success(res.message)
        this.list = res.data.rows
        this.total = res.data.total
      } catch (error) {
        console.log(error)
      }
    },
    // 格式化数据(正式非正式)
    formatData(id) {
      // return employeesEnum.hireType.find(item => item.id === id).value
      return hireType[id] || '未知'
    },
    // 当页码值切换时触发
    hCurrentChange(val) {
      this.page = val
      this.loadEmployees()
    },
    hSizeChange(curSize) {
      this.size = curSize
      this.loadEmployees()
    },
    // 关闭弹层,重新渲染数据
    hSuccess() {
      this.total++
      // 计算出最大的页码值
      const maxPage = Math.ceil(this.total / this.size)
      // 将页码值翻转到最后一页
      this.page = maxPage
      this.loadEmployees()
      this.showDialog = false
    },
    // 删除功能
    hDel(id) {
      this.$confirm('您确定要删除该部门吗, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(async() => {
        const res = await delEmployees(id)
        if (res.code === 10000) {
          this.$message.success(res.message)
          // 删除边界值的特殊处理
          if (this.list.length === 1) {
            this.pageParams.page--
            if (this.pageParams.page <= 0) {
              this.pageParams.page = 1
            }
          }
          this.loadEmployees()
        }
      }).catch(() => {
        this.$message({
          type: 'info',
          message: '已取消删除'
        })
      })
    },
    transZhKeyToExcel(list) {
      const mapInfo = {
        'id': '编号',
        'password': '密码',
        'mobile': '手机号',
        'username': '姓名',
        'timeOfEntry': '入职日期',
        'formOfEmployment': '聘用形式',
        'correctionTime': '转正日期',
        'workNumber': '工号',
        'departmentName': '部门',
        'staffPhoto': '头像地址'
      }

      const one = list[0]
      if (!one) return
      const tHeader = Object.keys(one).map(enKey => mapInfo[enKey])
      // console.log(tHeader)
      const data = list.map(item => Object.values(item))
      // console.log(data)
      return { tHeader, data }
    },
    exportExcel() {
      // 1. 发送到后台获取数据
      // 2. 将获取到的数据进行格式化处理.  tHeaer-->[表头], data -->[[],[]]
      const { tHeader, data } = this.transZhKeyToExcel(this.list)
      // 3. 将格式化好的数据写入到 excel文件中
      // import('@/vendor/Export2Excel')  懒加载的方式导入一个模块， 返回值是一个promise实例
      import('@/vendor/Export2Excel').then(excel => {
        excel.export_json_to_excel({
          header: tHeader,
          data,
          filename: this.filename,
          autoWidth: this.autoWidth,
          bookType: this.bookType
        })
      })
    },
    // 生成二维码图片
    showCode(url) {
      if (url) {
        this.showCodeDialog = true
        this.$nextTick(() => {
          const canvas = this.$refs.myCanvas
          QRCode.toCanvas(canvas, url)
        })
      } else {
        this.$message.error('请传入正确的图片')
      }
    },
    hAssignRole(id) {
      this.curId = id
      this.showDialogRole = true
    }

  }
}
</script>
